DOM4J解析XML文件

DOM4J

基于树形结构，第三方组件，效率更高，使用的Java中的迭代器实现数据读取，在web框架中使用较多（Hibernate）。

代码示例

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.junit.Test;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class DOM4JXmlDemo {
    @Test
    public void dom4jXmlParse() throws DocumentException {
        //1. 创建DOM4J解析器对象
        SAXReader reader = new SAXReader();
        InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream("xml/person.xml");

        Document doc = reader.read(is);
        Element rootElement = doc.getRootElement();
        Iterator<Element> iter1 = rootElement.elementIterator();

        List<Person> persons = new ArrayList<>();
        Person person = null;

        while (iter1.hasNext()) {
            person = new Person();
            Element element = iter1.next();
            person.setPersonId(element.attributeValue("personId"));

            Iterator<Element> iter2 = element.elementIterator();
            while (iter2.hasNext()) {
                Element next = iter2.next();
                String tag = next.getName();
                if ("name".equals(tag)) {
                    person.setName(next.getText());
                } else if ("address".equals(tag)) {
                    person.setAddress(next.getText());
                } else if ("tel".equals(tag)) {
                    person.setTel(next.getText());
                } else if ("fax".equals(tag)) {
                    person.setFax(next.getText());
                } else if ("email".equals(tag)) {
                    person.setEmail(next.getText());
                }
            }
            persons.add(person);
        }
        for (Person p : persons) {
            System.out.println(p);
        }
    }
}   

person.xml文件内容

<?xml version="1.0" encoding="UTF-8" ?>
<people>

    <person personId="E01">
        <name>Tony Blair</name>
        <address>10 Download Street,London UK</address>
        <tel>010-2586984</tel>
        <fax>010-4567787</fax>
        <email>blair@everywhere.com</email>
    </person>

    <person personId="E02">
        <name>Json</name>
        <address>10 Download Street,New York US</address>
        <tel>010-2586484</tel>
        <fax>010-4872127</fax>
        <email>json@everywhere.com</email>
    </person>

</people>

DOM4J解析XML文件

原文：https://www.cnblogs.com/zxfei/p/10940381.html